Below is the original description for this product, any reference to warranty is to be ignored. Warranty for this item is 90 days as with all B Grade items.

B Grade items may have been used, have damaged packaging, missing accessories or a combination of these (Motherboards may be missing I/O shields).

Some items may have scuff marks or slight scratches but should otherwise be an operable product.

The ASRock Z370 Extreme 4 is an attractive durable motherboard available at a great price point. It uses the Z370 chipset so it can support Intel's 8th generation Coffee Lake processors. The Z370 architecture also enables the ASRock Z370 Extreme 4 to automatically overclock compatible K-series CPUs.

PWM (Pulse-Width Modulation) is used to distribute power digitally across the board. This ensures a more even power flow than traditional analogue methods, which improves energy efficiency and the board's lifespan.

The board can truly be at the heart of a graphically dynamic system with support for NVIDIA's SLI and AMD's CrossFireX technology which lets you install and link multiple graphics cards to enhance performance.

The ASRock Z370 Extreme 4 has numerous technical innovations, enhancements and an array of storage solutions. There are 3 PCIe x16 slots, one of which uses a full 16 lanes to connect to the chipset, as well as 2 further PCIe x1 slots. It has two M.2 slots capable of running ultra fast NVMe-M.2 SSDs, resulting in a data transfer rate of nearly 4 GB/s. This makes M.2 PCIe SSDs up to eight times faster than SATA 6G SSDs. There are also two SATA 6G connectors for 3,5"- or 2,5" hard drives and -SSDs (incl. RAID support). Up to 64GB of RAM can be added across four DIMM slots.

The board implements PWM (Pulse-Width Modulation) rather than traditional analogue power. As a result voltage is distributed more smoothly across the board, which improves stability and lifespan.

The board offers excellent options for connecting external peripherals. With a convenient rear I/O panel, the motherboard includes a USB 3.1 Type C port. USB 3.1 ports are capable of achieving up to twice the speed of USB 3.0 ports. However, if you still want to link up old peripherals, the board features four additional USB 3.0 ports. The ASRock Z370 Extreme 4 is even Thunderbolt ready.

Network connections can be made via two Gigabit LAN ports and wi-fi connections by two wireless antennae connectors.

HDMI and DisplayPort 1.2 are fitted to the board for video output and 7.1 surround sound, or DTS Connect, is produced from the Realtek ALC1220 codec. Five 3.5 mm jacks are available.